PlayWithVars

using System;

class PlayWithVars
{
    static void Main()
    {
        Console.WriteLine("Please choose type:");
        Console.WriteLine("1 --> int");
        Console.WriteLine("2 --> double");
        Console.WriteLine("3 --> string");
        int choice = int.Parse(Console.ReadLine());

        switch (choice)
        {
            case 1:
                Console.Write("Please enter a int: ");
                int choiceOne = int.Parse(Console.ReadLine());
                Console.WriteLine(choiceOne + 1);
                break;
            case 2:
                Console.Write("Please enter a double: ");
                double choiceTwo = double.Parse(Console.ReadLine());
                Console.WriteLine(choiceTwo + 1);
                break;
            case 3:
                Console.Write("Please enter a double: ");
                string choiceThree = Console.ReadLine();
                Console.WriteLine(choiceThree + "*");
                break;
        }
    }
}